4Yearbook A S. African Development Bank[M]. Tunisia: African Union Commission, United Nation Economic Commission for Africa, 2013: 50-88.
5国际统计年鉴(2000-2013)[M].北京:中国统计出版社,2013:71-286.
6United Nations Dept.. African Statistical Yearbook[M]. New York: United Nations, 2012: 1-87.
7GODARD Xavier. Comparisons of urban transport sustainability: Lessons from West and North Africa[J]. Research in Transportation Economics, 2013, 401: 21-28.
8YOON K S. Systems selection by multiple at tributes decision making[M]. Kansas: Kansas Univ., 1980.
9SOKAL R R. ODEN N L. Spatial autocorrelation in biology : Mtehodology [J]. Biol. J. Linn. Soc., 1978 ( 10): 199-228.
10ROZELLE S. Rural industrialization and increasing inequality. Emerging patterns in China's reforming economy[J]. Journal of Comparative Economics, 1994, 19 (3): 362-391.